In this article (and video above), I solve a fluid dynamics question that would fall under the water resources and hydrology section of the FE exam, similar to what you may encounter during the exam.
A 500 mm circular pipe carries a flow of 0.28 m3/s of water under a pressure of 0.34 cm, mercury (Hg). If the pipe is laid at an elevation of 9.3 m above a reference datum, then the total head (m) with respect to the reference datum is most nearly:
- 9.45 m
- 9.37 m
- 9.66 m
- 9.71 m
The total head (H) assuming no friction losses and no pump or turbine can be approximated using the Bernoulli Equation below:
This question was supplied by Geder L. Mena Jimenez, E.I.T, an environmental engineer II at GZA GeoEnvironmental Inc. Mr. Mena received a Bachelor of Engineering in Earth Systems Science and Environmental Engineering from The City College of New York (CUNY) – Grove School of Engineering, 2017. Mr. Mena’s experience includes a variety of environmental site investigation and remedial activities: Environmental Site Investigation (ESI), Subsurface Remediation, Community Air Monitoring Programs (CAMP), Soil/Groundwater/Vapor sampling, Site Inspection, Data Analysis, Groundwater Modeling, GIS, Hydrology and Hydraulics Analysis, Underground Storage Tank (UST) Management and Closure, and Characterization of Soil and Groundwater for disposal. You can connect with Geder here.
I hope you found this week’s fluid dynamics question helpful. In upcoming articles, I will answer more FE Exam questions and run through more practice problems. We publish videos bi-weekly on our Pass the FE Exam YouTube Channel. Be sure to visit our page here and click the subscribe button as you’ll get expert tips and tricks – to ensure your best success – that you can’t get anywhere else. Believe me, you won’t want to miss a single video.
Lastly, I encourage you to ask questions in the comments of the videos or here on this page and I’ll read and respond to them in future videos. So, if there’s a specific topic you want me to cover or answer, we have you covered.
I’ll see you next week.
Anthony Fasano, P.E.
Engineering Management Institute
Author of Engineer Your Own Success